Headrest attachment element



FIG. 1 is a front perspective view of a headrest attachment element, showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The claimed design is intended to be used to attach an item to posts of a headrest.

The broken lines illustrate environmental matter that forms no part of the claimed design. 

CLAIM The ornamental design for a headrest attachment element, as shown and described. 